Director Brett Ratner threw a party for cooking queen Katie Lee at his lavish Hollywood home, Hillhaven — the former home of Ingrid Bergman and James Caan — to celebrate the launch of her first novel, “Groundswell.” The protagonist somewhat resembles Lee, ex-wife of Billy Joel, in a story about a famous marriage and rumored affair. The intimate party for 50 included Hollywood elite like James Toback, Toby Emmerich, Brian Grazer and Jonathan Glickman.